/Engine/Source/Runtime/GeometryCore/Public/VectorUtil.h
angle between vectors (A-CornerPt) and (B-CornerPt)
namespace UE { namespace Geometry { namespace VectorUtil { template<typename RealType> RealType UE::Geometry::VectorUtil::OpeningAngleD ( [TVector](API\Runtime\Core\Math\TVector)< RealType > A, [TVector](API\Runtime\Core\Math\TVector)< RealType > B, const [TVector](API\Runtime\Core\Math\TVector)< RealType > & P ) } } }